CN1262865C

CN1262865C - Image projecting device with matrix-shape optical switch

Info

Publication number: CN1262865C
Application number: CNB03123089XA
Authority: CN
Inventors: 都尚会; 洪昌完
Original assignee: Samsung Electronics Co Ltd
Current assignee: Samsung Electronics Co Ltd
Priority date: 2002-05-02
Filing date: 2003-04-30
Publication date: 2006-07-05
Anticipated expiration: 2023-04-30
Also published as: EP1359772A3; CN1455284A; US20040109141A1; KR20030085907A; KR100441603B1; EP1359772A2; US6910776B2

Abstract

An image projecting apparatus having an optical switch of a non-square matrix structure, is provided. A light source emits a plurality of monochromatic lights having different wavelengths. A first light transmission unit includes of a plurality of optical fibres that allows monochromatic lights to be passed therethrough. An optical switch unit has a plurality of non-square matrix type reflecting mirrors to selectively reflect the monochromatic lights. The reflecting mirrors includes a first group placed at odd lines and a second group placed at even lines. A square-beam generation unit converts reflected monochromatic lights into square beams, and a panel transmits the monochromatic lights converted into square beams and forms monochromatic signals of a predetermined size.

Description

Image projection equipment with matrix type optical switch

Technical field

The present invention relates to a kind of image projection equipment, more particularly, relate to a kind of equipment, this equipment carries out image projection and forms a plurality of R, G, B colour signal to go up at display board (panel) by the optical switch (optical-switch) that use has non-square matrix (non-square matrix) type structure.

The application is incorporated herein by reference based on the korean patent application of submitting on May 2nd, 2002 (No.2002-24209).

Background technology

Projector is a kind of equipment that is used for image projection, and this equipment is by projecting to received image signal display image on the screen.Image projection equipment is mainly used in projector and the home theater in meeting room, the cinema.

Adopted a method to realize giant-screen traditionally, these method scioptics will be presented at after image on LCD (LCD) or the cathode ray tube (CRT) amplifies, and project image onto on the screen.Yet this method is enlarged image only, and distinct image but is not provided.In order to address the above problem, use DMD (Digital Micromirror Device (Digital Micro-mirror Device) the display board image projection equipment of having used now.

DMD is the optical switch that adopts micro mirror.Micro mirror is controlled reflection of light according to received image signal.Simultaneously, DMD Applied Digital method, thus, picture signal has good color reproduction, and the brightness height.And, need not A/D or D/A conversion, just can realize clearly imaging.

Fig. 1 illustrates the basic structure of the legacy equipment that uses colour wheel (color wheel) image projection.

With reference to Fig. 1, use the equipment of colour wheel image projection to have light source 10, colour wheel 20, DMD display board 30 and projecting lens 40.In Fig. 1, the optical path of white light is shown with a dot-and-dash line.

Light source 10 uses arc lamp or laser instrument to launch white light.Colour wheel 20 is by rotating mechanism (not shown) rotation (direction as shown by arrows), and this colour wheel 20 is divided into R (red), G (green) and B (indigo plant) zone.

R, G and B zone by colour wheel 20 will be divided into R, G, B light beam from the white light of light source 10 emissions.DMD display board 30 has a plurality of micro mirror 30a to constitute.To project DMD display board 30 according to R, G, the B light beam that each wavelength is told, and reflect at micro mirror 30a place.R after the reflection, G, B light beam see through projecting lens 40 and produce image on screens.

Fig. 2 illustrates the basic structure of the image projection equipment of the optical switch with 3 * 3 matrix structures.

The present inventor invents out the image projection equipment 200 among Fig. 2, and this will illustrate in this manual that still, this invention is also not open to the public.

With reference to Fig. 2, image projection equipment 200 comprises light source 110, first optical transmission unit 120, optical switch unit 130, second optical transmission unit 140, square light beam (square-beam) generation unit 150, display board 160 and projecting lens unit 170.And the optical path of the R in optical switch unit 130, G, B laser beam is represented by single-point line, double dot dash line and three dot-and-dash lines respectively.

The a plurality of monochromatic light that have different wave length each other of light source 110 emissions, and in the present embodiment, R, G, B laser beam are used as monochromatic light.Transmission unit 120 comprises a plurality of first

optical fiber

122a, 122b and 122c, and a plurality of

first collimation lens

124a, 124b and 124c.The first

optical fiber

122a, 122b and 122c allow R, G, B laser beam to pass through, and the

first collimation lens

124a, 124b and 124c will focus on optical switch unit 130 by the laser beam of Optical Fiber Transmission.

Optical switch unit 130 has the optical switch 130a that is arranged in 3 * 3 matrix structures to 130i.Optical switch 130a each in the 130i is the laser beam behind the reflect focalization optionally, with to port one 35a, 135b and 135c output.

Incide the second collimation lens 142a, 142b and 142c by port one 35a, 135b and 135c from the optical switch 130a of optical switch unit 130 respectively to 130i laser light reflected bundle.

Second optical transmission unit 140 comprises a plurality of second collimation lens 142a, 142b and 142c and a plurality of second

optical fiber

144a, 144b and 144c.R, G, the B laser beam that will focus on the second

optical fiber

144a, 144b and 144c by the second collimation lens 142a, 142b and 142c be fluorescent tube (light tube) 154a, 154b and the 154c of the side's of being transferred to light beam (square-beam) generation unit 150 respectively.

Side's light beam generation unit 150 has a plurality of

first lens

152a, 152b and 152c, a plurality of

fluorescent tube

154a, 154b and 154c and second lens 156.The laser beam side of the being converted to light beam that

fluorescent tube

154a, 154b and 154c will be divided by

first lens

152a, 152b and the 152c.Second lens 156 divide the laser beam after the conversion again.

Display board 160 is DMD display boards.Display board 160 receives R, G, the B laser beam after the division, forms R, G and B color belt (colorstrip) on the part in three parts of display board 160 thus.

By operating optical switch element 130, on display board 160, form three R, G and B color belt, and, generate an image along with same color belt forms for three times with different positions (the going up of display board 160, in and lower part).

Display board 160 digitizings and time are cut apart R, G and B color belt, and reflect them at a predetermined angle.By the image projection of projecting lens unit 170 after with the reflection of entire display panel to screen, and imaging.Projecting lens unit 170 is installed in display board 160 opposites.

Described traditional image projection equipment 100 generates image by adopting colour wheel 20, and in this case, used light quantity is 1/3rd of a total amount in DMD display board 30.This be because: the R light beam in Zone R territory that will be by colour wheel 20 is transmitted to whole DMD display board 30 equably, and G and B light beam are stopped by color filter and be not used.When projection G and B light beam, so same.

The colour wheel method can be used 1/3rd incident white light, and the brightness of image is reduced to 1/3rd thus.That is, along with the white light that sends from light source projects on the DMD display board 30 after by colour wheel, light summation is lowered, the result, and optical efficiency also reduces.And the brightness of the image that is generated can not maximize.

And the image projection equipment 200 among Fig. 2 that the present inventor has proposed generates image by the optical switch that uses 3 * 3 matrix structures, and like this, the optical efficiency of equipment 200 is higher than the optical system of using colour wheel.Yet, in image projection equipment 200, on display board 160, in and the end of formed each color belt of lower floor overlap each other the blur margin Chu of color signal thus.In this case, the image that generates on screen has unnecessary sideline.

Summary of the invention

The present invention is used to overcome above-mentioned the problems of the prior art.So, the purpose of this invention is to provide a kind of image projection equipment that can improve the utilization factor of light, before using this invention, the utilization factor of light 1/3rd of the indicator panel that degenerates.

Another object of the present invention provides a kind of image projection equipment, this equipment adopts the optical switch of (3 * 6) matrix or (6 * 3) matrix structure, when on display board when using optical switch to form a plurality of monochromatic band, can prevent that the boundary line of monochromatic band from occurring overlapping.

A kind of image projection equipment of the present invention comprises: light source, launch a plurality of monochromatic light with different wave length; First optical transmission unit comprises a plurality of optical fiber, and described monochromatic light is by this optical fiber; Optical switch unit comprises a plurality of catoptrons with non-square matrix structure, so that optionally reflect described monochromatic light, the catoptron of non-square matrix structure comprises first group of being positioned at odd-numbered line and is positioned at second group of even number line; At least one side's light beam generation unit is used for the monochromatic light side of the being converted to light beam after the reflection; Display board is used for the monochromatic light according to the side's of the being converted to light beam that is transmitted, and forms the monochrome band of pre-sizing; And projecting lens unit, install towards display board.First group of optical switch unit and second group reflect described multi beam monochromatic light with the order that replaces.

More particularly, mobile mirror between the primary importance and the second place; This primary importance reflection monochromatic light, this second place allows monochromatic light to pass through.In delegation and row, optical switch unit only allows a catoptron is placed primary importance.

According to predesigned order,, on display board, produce at least one screen along with at least one secondary reflection monochromatic light of a plurality of catoptrons.The non-square matrix of optical switch unit is (3 * 6) matrix or (6 * 3) matrix.Catoptron is MEMS (Micro Electro Mechanical System) mirror.

And this image projection equipment also comprises the output port unit, and this output port unit has a plurality of output ports, so that output is from the described monochromatic light of the mirror reflects of a plurality of optical switch elements.To output to output port from the monochromatic light of first mirror reflects a plurality of catoptrons corresponding to first catoptron.

And this image projection equipment also has second optical transmission unit, and this second optical transmission unit comprises a plurality of optical fiber, so that will be from the monochromatic light side of the being transferred to light beam generation unit that output port sent.Display board is DMD (Digital Micromirror Device), and this display board is modulated to digital signal with a plurality of monochromatic bands, and at a predetermined angle this digital signal is reflexed to projecting lens unit.

According to the present invention, form a plurality of monochromatic bands by the optical switch that adopts (3 * 6) matrix or (6 * 3) matrix structure, can prevent that the boundary line of monochromatic band from occurring overlapping.

Description of drawings

By the reference accompanying drawing the preferred embodiments of the present invention are described, above-mentioned purpose of the present invention and feature will be more obvious, wherein:

Fig. 1 illustrates the basic structure of the traditional images projector equipment that uses colour wheel;

Fig. 2 illustrates the basic structure of the image projection equipment with 3 * 3 matrix structures that is proposed by the inventor;

Fig. 3 illustrates the image projection equipment of 6 * 3 matrix structures according to the preferred embodiment of the invention;

Fig. 4 is the figure that is used to explain the color belt that forms by 6 * 3 optical switch unit that are applied to Fig. 2 on the DMD display board;

Fig. 5 A illustrates according to a preferred embodiment of the invention to 5F, realizes the processing of screen according to the operation of optical switch unit.

Embodiment

Below, will illustrate in greater detail the present invention in conjunction with the accompanying drawings.

Fig. 3 illustrates image projection equipment according to a preferred embodiment of the invention.

With reference to Fig. 3, image projection equipment 300 according to the present invention comprises light source 210, first optical transmission unit 220, optical switch unit 230, output port 240, second optical transmission unit 250, square light beam generation unit 260, display board 270 and projecting lens unit 280.In the optical switch unit 230 of Fig. 3, the optical path of R, G, B laser beam is represented by solid line, single-point line and double dot dash line respectively.

The a plurality of monochromatic light of light source 210 emissions with different wave length.Laser instrument, arc lamp, metal halide lamp, Halogen lamp LED and xenon lamp can be used for light source 210.In the present invention, use the monochromatic light of multi beam R, G and B laser beam.

First optical transmission unit 220 comprises a plurality of

optical fiber

222a, 222b and 222c and a plurality of

first collimation lens

224a, 224b and 224c.The first

optical fiber

222a, 222b and 222c are transferred to the

first collimation lens

224a, 224b and 224c with in R, G, the B laser beam each.The

first collimation lens

224a, 224b and 224c assemble R, G, the B laser beam of being transmitted to optical switch unit 230.

Optical switch unit 230 reflects R, G, B laser beam at a predetermined angle, perhaps allows R, G, B laser beam to pass through, and has a plurality of optical switches with non-square matrix structural arrangement.In other words, (n is the integer greater than 3 to these a plurality of optical switches, and (m is the integer greater than 3, the matrix structure of m＜n) for the matrix structure of m＞n) or m * n with m * n.In this case, optical switch unit 230 has m * n optical switch.

Best, the intensive reflector that will use MEMS (MEMS (micro electro mechanical system)) manufacturing is used for optical switch.Because optical switch does not transfer input optical signal to electric signal, so optical switch is directly exported R, G and B laser beam.Thus, the switching speed that switches on or off accelerates up to ten thousand times with respect to optical signalling being transferred to the required conventional switch speed of electric signal.

Optical switch has catoptron and driver element.One side of this catoptron is MEMS intensive reflector and its reflection lasering beam.Between the primary importance (on position) and the second place (off-position), the driver element mobile mirror; At this primary importance place, R, the G of input optical switch and certain part that the B laser beam is reflected to display board, at this second place place, R, G and the rectilinear propagation of B laser beam of input optical switch.

Locate in primary importance (connection), optical switch is tilted (for example, the optical switch position shown in 230a, 230h and 230o among Fig. 3), the laser beam of this optical switch reflection input.Locate in the second place (cut-out), optical switch was fallen (for example, as 230b among Fig. 3 to 230g, 230i to 230n and 230p to the optical switch position shown in the 230r).

Referring again to Fig. 3, explanation had 18 optical switch 230a forming with 6 * 3 matrix structures optical switch unit 230 to 230r.The optical switch 230a of optical switch unit 230 is divided into first group (230a, 230b, 230c, 230g, 230h, 230i, 230m, 230n and the 230o) that is positioned at odd lines and is positioned at second group (230d, 230e, 230f, 230j, 230k, 230l, 230p, 230q and 230r) of even lines to 230r.

First group and second group of alternating reflex monochromatic light of optical switch unit 230.And, in delegation and row, only there is an optical switch to be placed under the condition of primary importance (connection), first group (first line, three-way and the 5th line in (3 * 3) matrix) work of optical switch unit 230.And, three optical switches are being placed simultaneously primary importance or whole (3 * 3) optical switch are placed under the condition of primary importance first group of work with predesigned order.Second group with the same manner work (second line in (3 * 3) matrix, the 4th line and the 6th line).

For example, when the R that incides optical switch unit 230, G and B laser beam by first group of reflex time, at the fixed time in second group be placed in the second place (cut-out).When schedule time past tense, place the second place (cut-out) and R, G and B laser beam by second group of reflection with first group.First group and second group reflects R, G and B laser beam, perhaps allows this R, G and B laser beam alternately to pass through at interval with preset time.

This preset time is to convert second group or second group at first group to convert first group of time that is kept at interval.This time interval is to realize 60 times that image scene is required p.s..Based on driving method, the actual time interval can be different.

With reference to Fig. 3, will illustrate by first group of reflection R, G and B laser beam.When first group of certain optical switch 230a placed primary importance (connection), go together with this certain optical switch 230a and optical switch 230b, 230c, 230g and the 230m of same column is placed in the second place (cut-out).When first group of certain optical switch 230h placed primary importance (connection), go together with this certain optical switch 230h and the optical switch 230I and the 230n of same column is placed in the second place (cut-out), and remaining optical switch 230o is placed in primary importance (connection).

In above-mentioned situation, in optical switch 230a place reflection R laser beam, in optical switch 230h place reflection G laser beam, in optical switch 230o place reflection B laser beam.When said process finishes, second group of reflection lasering beam in an identical manner.

And, when (6 * 3) individual optical switch (230a is to 230r) being placed primary importance (connection) at least a time, generate an image.That is, three optical switches in the different row and columns that will be scheduled to organize place primary importance (connection) afterwards, and three optical switches in the different row and columns of this group are placed primary importance (connection), and said process is carried out three times.In said process, identical optical switch can not placed primary importance (connection).

By output port 240, be transferred to second optical transmission unit 250 to 230r place laser light reflected bundle at the optical switch 230a of optical switch unit 230.

Output port 240 has a plurality of output port P1, P2, P3, P4, P5 and P6.This output port P1 is installed in the output terminal of optical switch unit 230 to P6, so that be arranged in every row of optical switch unit 230 respectively.

Second optical transmission unit 250 comprises that a plurality of second optical fiber 250a are to 250f.And, a plurality of second collimation lens (not shown) are provided at the front end of the second optical fiber 250a to 250f.The second optical fiber 250a will be by R, G and the B laser beam side of the being transferred to light beam generation unit 260 of second collimation lens (not shown) gathering to 250f.

Square light beam generation unit 260 is installed in the output terminal of the second optical fiber 250a to 250f, and square light beam generation unit 260 is converted to the square light beam with preset width and length ratio with R, G and the B laser beam of being transmitted.Side's light beam generation unit 260 has a plurality of first lens 262a to 262f, a plurality of fluorescent tube 264a to 264f with second lens 266.

The first lens 262a disperses each laser beam so that allow this laser beam to incide fluorescent tube 264a to 264f corresponding to the first lens 262a to 262f to 262f.

Constitute fluorescent tube 264a and make it to have cube shaped, and the inside of this fluorescent tube is empty to 264f.Fluorescent tube 264a is made of mirror to four inwalls of 264f.Incide laser beam the be converted into side light beam of the fluorescent tube 264a of hollow to the 264f inboard from the first lens 262a to 262f.

The laser beam that second lens 266 disperse the side's of being converted to light beam, and the laser beam incident after allowing to disperse is to display board 270.Display board 270 is made of DMD (digital micro-mirror) display board or a LCD (liquid crystal display) display board.The DMD display board is that reflective display panel and LCD display board are the display boards of light-permeable.When adopting the LCD display board, can change the position of projecting lens and screen.

Below, according to using the DMD display board that the present invention is described.Yet the DMD display board shown in Fig. 3 is not included in the optical channel of DMD display board place laser light reflected bundle.

Display board 270 is veneer (single plate) DMD display boards.At an end of display board 270, with R, G and B laser beam formation R, the G and the monochromatic light belt of B of the side's of being converted to light beam.The R band is represented that by oblique line the G band is represented that by vertical line the B band is represented by backslash.

And display board 270 can temporarily be divided into upper end 1 (up_1), upper end 2 (up_2), middle-end 1 (mid_1), middle-end 2 (mid_2), lower end 1 (down_1) and lower end 2 (down_2).When operating optical switch element 230 as shown in Figure 3, at predetermined optical switch 230a place reflection R light beam, the optical switch 230h place reflection G light beam predetermined reflects the B light beam at the optical switch 230o place that is scheduled to.

In above-mentioned situation, after seeing through the first output port P1, the second optical fiber 250a, the first lens 262a, fluorescent tube 264a and second lens 266, the R light beam is projected the upper end 1 (up_1) of display board 270.The G light beam projected middle-end 1 (mid_1) and the B light beam is projected the lower end 1 (down_1) of display board 270.

Display board 270 has a plurality of accurate driving mirrors.After R, the G that will form at display board 270 places and B band are modulated to digital form, drive mirror and drive each R, G and B band, and reflect this R, G and B band at a predetermined angle.Along with the image projection of the entire display panel that will be reflected from the driving mirror of display board 270 by projecting lens unit 280 to screen, generate image.Projecting lens unit 280 is regarded to display board 270 installs.

Fig. 4 illustrates by (6 * 3) optical switch unit, the single band that forms on the DMD display board.

In Fig. 4, upper end 1 (up_1), upper end 2 (up_2) and the middle-end 1 (mid_1) of display board 270 is shown.1 (up_1) locates to represent with oblique line in the upper end about the first monochromatic band (1 color) at optical switch unit 230 first line place laser light reflected bundles.2 (up_2) locate to represent with backslash in the upper end about the second monochromatic band (2 color) at optical switch unit 230 second line place laser light reflected bundles.

The overlapping part of oblique line and backslash illustrates the lap of the borderline region of the first monochromatic band (1 color) and the second monochromatic band (2 color).The first monochromatic band (1 color) at first forms, and the second monochromatic band (2 color) forms and with first monochromatic to be with (1 color) overlapping distance be d in the bottom of the first monochromatic band (1 color).

Yet, because the driving mirror of display board 270, so a plurality of monochromatic band that forms at display board 270 does not have overlapping.More specifically explain, even the area that forms the first monochromatic band (1 color) when the laser beam of incident is during greatly to w * a (w is the width of display board 270 and the first monochromatic height of being with (1 color) that a is input display board 270), drive installation is at display board 270 regional w * d "/2 (d "/the 2nd, the half-distance of overlapping region d) the driving mirror so that at regional w * d "/do not form the first monochromatic band (1 color) in 2.That is, be driven so that be not reflected into the regional w * d that is mapped to display board 270 owing to drive mirror "/2 laser beam, only 1 (up_1) forms the first monochromatic band (1 color) in the upper end.

In the same way, the method with the monochromatic band of above-mentioned formation is applied to the second monochromatic band (2 color).Only 2 (up_2) form the second monochromatic band (2 color) in the upper end.So, can a method form monochromatic band, this method makes the boundary line of monochromatic band not have overlapping for the above-mentioned type of drive owing to optical switch unit 230 and display board 270.

Fig. 5 A illustrates the preferred embodiment that generates based on the order of operation of optical switch unit of the present invention to 5F.By using processing, realize a screen from Fig. 5 A to 5F.These processing can be changed.Fig. 5 A, 5C and 5E illustrate the operation of the optical switch that places first group, and Fig. 5 B, 5D and 5F illustrate the operation of the optical switch that places second group.

With reference to Fig. 5 A to 5F, placing one of first group the first row

optical switch

230a, 230g and 230m to locate, placing one of first group secondary series optical switch 230b, 230h and 230n to locate and placing one of first group the 3rd row optical switch 230c, 230i and 230o to locate, R, G and B laser beam by 220 transmission of first optical transmission unit are reflected.In these cases, in identical row and column, an optical switch is only arranged with primary importance (connection) reflection monochromatic laser beam.

And, by the first output port P1, forming monochromatic band in the upper end 1 of display board 270 (up_1) from an optical switch laser light reflected bundle, this optical switch belongs to and is arranged in first group of first-line optical switch 230a to 230c.By the 3rd output port P3, form monochromatic band from an optical switch laser light reflected bundle in the middle-end 1 (mid_1) of display board 270, this optical switch belongs to and is arranged in first group the three-way optical switch 230g to 230i.By the 5th output port P5, form monochromatic band in the lower end 1 of display board 270 (down_1) from an optical switch laser light reflected bundle, this optical switch belongs to 230o of the optical switch 230m that is arranged in first group of the 5th line.

When realizing optical switch unit 230, be shown in the 5A-2 of Fig. 5 A at formed monochromatic band on the display board 270 as table 1.

[table 1]

	Port one	Port 2	Port 3	Port 4	Port 5	Port 6
	Port one	Port 2	Port 3	Port 4	Port 5	Port 6	Red	230a: connect	230d: cut off	230g: cut off	230j: cut off	230m: cut off	230p: cut off
Green	230b: cut off	230e: cut off	230h: connect	230k: cut off	230n: cut off	230q: cut off	Red	230a: connect	230d: cut off	230g: cut off	230j: cut off	230m: cut off	230p: cut off
Green	230b: cut off	230e: cut off	230h: connect	230k: cut off	230n: cut off	230q: cut off	Blue	230c: cut off	230f: cut off	230I: cut off	230l: cut off	230o: connect	230r: cut off

In table 1, the red R light beam of representing, green representative G light beam, the blue B light beam of representing, port one is connected the primary importance of representing reflection lasering beam to a plurality of output ports of port 6 representatives, cut off the second place of representing laser beam to pass through, and 230a represents optical switch to 230r.

When only in 230r first group of the optical switch 230a of optical switch unit 230 being driven, shown in the 5A-1 among Fig. 5 A, form monochromatic band shown in the 5A-2 among Fig. 5 A at display board 270 places.The P1:R representative of 5A-1 is imported the R light beam from optical switch 230a to the first output port P1.The P3:G representative is imported the G light beam from optical switch 230h to the 3rd output port P3.At last, the P5:B representative is imported the B light beam from optical switch 230o to the 5th output port P5.

And, when driving optical switch unit 230, be presented among the 5B-2 of Fig. 5 B at display board 270 formed single bands as table 2.

[table 2]

	Port one	Port 2	Port 3	Port 4	Port 5	Port 6
	Port one	Port 2	Port 3	Port 4	Port 5	Port 6	Red	230a: cut off	230d: connect	230g: cut off	230j: cut off	230m: cut off	230p: cut off
Green	230b: cut off	230e: cut off	230h: cut off	230k: connect	230n: cut off	230q: cut off	Red	230a: cut off	230d: connect	230g: cut off	230j: cut off	230m: cut off	230p: cut off
Green	230b: cut off	230e: cut off	230h: cut off	230k: connect	230n: cut off	230q: cut off	Blue	230c: cut off	230f: cut off	230I: cut off	230l: cut off	230o: cut off	230r: connect

As the optical switch 230a of driving optical switch unit 230 as shown in table 2 during, promptly in the time of only drive shown in the 5B-1 among Fig. 5 B second group, form the monochrome band shown in Fig. 5 B-2 at display board 270 places to 230r.

And, when driving optical switch unit 230 as shown in table 3, be presented among the 5C-2 of Fig. 5 C at display board 270 formed monochromatic bands.

[table 3]

	Port one	Port 2	Port 3	Port 4	Port 5	Port 6
	Port one	Port 2	Port 3	Port 4	Port 5	Port 6	Red	230a: cut off	230d: cut off	230g: connect	230j: cut off	230m: cut off	230p: cut off
Green	230b: cut off	230e: cut off	230h: cut off	230k: cut off	230n: connect	230q: cut off	Red	230a: cut off	230d: cut off	230g: connect	230j: cut off	230m: cut off	230p: cut off
Green	230b: cut off	230e: cut off	230h: cut off	230k: cut off	230n: connect	230q: cut off	Blue	230c: connect	230f: cut off	230I: cut off	230l: cut off	230o: cut off	230r: cut off

As the optical switch 230a of driving optical switch unit 230 as shown in table 3 during, promptly in the time of only drive shown in the 5C-1 among Fig. 5 C first group, form the monochrome band shown in Fig. 5 C-2 at display board 270 places to 230o.

And, when driving optical switch unit 230, be presented among the 5D-2 of Fig. 5 D at display board 270 formed monochromatic bands as table 4.

[table 4]

	Port one	Port 2	Port 3	Port 4	Port 5	Port 6
	Port one	Port 2	Port 3	Port 4	Port 5	Port 6	Red	230a: cut off	230d: cut off	230g: cut off	230j: connect	230m: cut off	230p: cut off
Green	230b: cut off	230e: cut off	230h: cut off	230k: cut off	230n: cut off	230q: connect	Red	230a: cut off	230d: cut off	230g: cut off	230j: connect	230m: cut off	230p: cut off
Green	230b: cut off	230e: cut off	230h: cut off	230k: cut off	230n: cut off	230q: connect	Blue	230c: cut off	230f: connect	230I: cut off	230l: cut off	230o: cut off	230r: cut off

As the optical switch 230a of driving optical switch unit 230 as shown in table 4 during, promptly in the time of only drive shown in the 5D-1 among Fig. 5 D second group, form the monochrome band shown in Fig. 5 D-2 at display board 270 places to 230r.

And, when driving optical switch unit 230 as shown in table 5, be presented among the 5E-2 of Fig. 5 E at display board 270 formed monochromatic bands.

[table 5]

	Port one	Port 2	Port 3	Port 4	Port 5	Port 6
	Port one	Port 2	Port 3	Port 4	Port 5	Port 6	Red	230a: cut off	230d: cut off	230g: cut off	230j: cut off	230m: connect	230p: cut off
Green	230b: connect	230e: cut off	230h: cut off	230k: cut off	230n: cut off	230q: cut off	Red	230a: cut off	230d: cut off	230g: cut off	230j: cut off	230m: connect	230p: cut off
Green	230b: connect	230e: cut off	230h: cut off	230k: cut off	230n: cut off	230q: cut off	Blue	230c: cut off	230f: cut off	230I: connect	230l: cut off	230o: cut off	230r: cut off

As the optical switch 230a of driving optical switch unit 230 as shown in table 5 during, promptly in the time of only drive shown in the 5E-1 among Fig. 5 E first group, form the monochrome band shown in Fig. 5 E-2 at display board 270 places to 230r.

And, when driving optical switch unit 230 as shown in table 6, be presented among the 5F-2 of Fig. 5 F at display board 270 formed monochromatic bands.

[table 6]

	Port one	Port 2	Port 3	Port 4	Port 5	Port 6
	Port one	Port 2	Port 3	Port 4	Port 5	Port 6	Red	230a: cut off	230d: cut off	230g: cut off	230j: cut off	230m: cut off	230p: connect
Green	230b: cut off	230e: connect	230h: cut off	230k: cut off	230n: cut off	230q: cut off	Red	230a: cut off	230d: cut off	230g: cut off	230j: cut off	230m: cut off	230p: connect
Green	230b: cut off	230e: connect	230h: cut off	230k: cut off	230n: cut off	230q: cut off	Blue	230c: cut off	230f: cut off	230I: cut off	230l: connect	230o: cut off	230r: cut off

As the optical switch 230a of driving optical switch unit 230 as shown in table 6 during, promptly in the time of only drive shown in the 5F-1 among Fig. 5 F second group, form the monochrome band shown in Fig. 5 F-2 at display board 270 places to 230r.

As mentioned above, by coming imaging to the processing of 5F with predesigned order execution graph 5A.Yet first group and second group can alternate succession work.And, anamorphote (anamolphic lens) as square light beam generation unit 260, is taked for the fluorescent tube 264a among the present invention to 264f.Anamorphote has different length and width curvature, and realizes the color belt bar shaped light beam on display board.

According to the present invention, use optical switch with (3 * 6) or (6 * 3) matrix structure, the border of the monochrome band that forms on display board does not have overlapping.Especially, at the fixed time at interval in alternate succession operating optical switch, like this, the overlapping of monochromatic band edge circle do not occur.And, because by using the MEMS method that monochromatic band is formed with continuous order on display board, so the light utilization ratio on display board can improve.So, along with the raising of the utilization factor of light quantity and light, but the brightness of Enhanced Imaging.

Although the preferred embodiments of the present invention have been described, those skilled in the art is to be understood that the present invention should not be limited to described preferred embodiment, within the spirit and scope of the present invention, can carry out various substitutions and modifications.So scope of the present invention is not limited to described scope, and is defined by the claims.

Claims

1. image projection equipment comprises:

Light source, the emission multi beam has the monochromatic light of different wave length;

Optical transmission unit comprises a plurality of first optical fiber, and described multi beam monochromatic light is respectively by these a plurality of first optical fiber;

Optical switch unit, comprise a plurality of catoptrons with non-square matrix structure, so that optionally reflect described multi beam monochromatic light, described non-square matrix comprises first group of catoptron that is positioned at odd-numbered line and the second group of catoptron that is positioned at even number line, and described non-square matrix is M * N matrix, wherein N is integer and the M＞N greater than 3, and perhaps M is integer and the M＜N greater than 3;

Side's light beam generation unit is used for the described multi beam monochromatic light after the reflection is converted to each side's light beam;

Display board is used for forming the monochrome band of a plurality of pre-sizings according to the monochromatic input of described multi beam after the classical prescription Beam Transformation; With

Projecting lens unit is installed towards display board,

First group of wherein said optical switch unit and second group of catoptron alternately reflect described multi beam monochromatic light, so that for each row in the described non-square matrix and each row, only a radiation in the group of operating is through reflecting described monochromatic light.

2. image projection equipment as claimed in claim 1 wherein moves a plurality of catoptrons between the primary importance and the second place, this primary importance reflection multi beam monochromatic light, and this second place allows multi beam monochromatic light to pass through.

3. image projection equipment as claimed in claim 1, wherein along with described a plurality of catoptrons according to predesigned order respectively at least once to described multi beam reflection of monochromatic light, on display board, produce at least one image.

4. image projection equipment as claimed in claim 1, wherein the non-square matrix of optical switch unit is one of 3 * 6 matrixes and 6 * 3 matrixes.

5. image projection equipment as claimed in claim 1, wherein a plurality of catoptrons are MEMS (micro electro mechanical system) mirrors.

6. image projection equipment as claimed in claim 1 also comprises the output port unit, and this output port unit has a plurality of output ports, with the described multi beam monochromatic light that a plurality of catoptron reflected of output from optical switch element.

7. image projection equipment as claimed in claim 6, a branch of in wherein will the described multi beam monochromatic light that first reflected from a plurality of catoptrons output to first corresponding a plurality of output ports in a plurality of catoptrons in one.

8. image projection equipment as claimed in claim 6 also comprises second optical transmission unit, and this second optical transmission unit comprises a plurality of second optical fiber, will be transferred to described side's light beam generation unit from described a plurality of monochromatic light that described a plurality of output ports send.

9. image projection equipment as claimed in claim 1, wherein display board is a Digital Micromirror Device, this display board is modulated to digital signal with a plurality of monochromatic bands, and at a predetermined angle this digital signal is reflexed to projecting lens unit.